US3761357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding of enzymes to polymeric materials
Assignee: KOCH-LIGHT Ltd ROOKWOOD WAY HAVERHILL SUFFOLK ENGLAND CB9 8PB
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Filing: 1971-09-15
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Granted: 1973-09-25
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Expires: 1991-09-15
Abstract
Abstract A HYDROPHILIC WATER INSOLUBLE ENZYME POLYMER IS PREPARED BY BONDING AN ENZYME TO ALDEHYDE GROUPS ON A POLYMER HAVING ALONG ITS BACKBONE ADDITIONAL REPEATING PENDANT SIDE GROUPS COMPRISING PREDOMINATELY ALIPHATIC DIMETHYL ACETAL GROUPS OR A COMBINATION OF ALIPHATIC DIMETHYL ACETAL GROUPS AND PRIMARY AMIDE GROUPS.
Inventors
- 👤 R Epton
- 👤 Laren J Mc
- 👤 T Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
C; C12; C12P; C12P1/00; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/082; C12N11/087; C12N11/089; C12N11/091
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |